When a freak hurricane swamps Los Angeles, nature's deadliest killer rules sea, land, and air as thousands of sharks terrorize the waterlogged populace.

Fin and April are on their way to New York City, until a category seven hurricane spawns heavy rain, storm surges, and deadly Sharknadoes.

A monstrous tornado unleashes ravenous sharks from Washington, D.C., all the way down to Orlando, Florida.

With much of America lying in ruins, the rest of the world braces for a global sharknado, and Fin and his family must travel around the world to stop them.

Fin has to go back in time to rejoin his shark-battling friends to stop the first Sharknado and save humanity.